n. [ L. pecten, -inis, a comb, a kind of shellfish. See Pectinate. ] 1. (Anat.) (a) A vascular pigmented membrane projecting into the vitreous humor within the globe of the eye in birds, and in many reptiles and fishes; -- also called marsupium. (b) The pubic bone. [ 1913 Webster ]
2. (Zool.) Any species of bivalve mollusks of the genus Pecten, and numerous allied genera (family Pectinidæ); a scallop. See Scallop. [ 1913 Webster ]
3. (Zool.) The comb of a scorpion. See Comb, 4 (b). [ 1913 Webster ]